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Why does CATIA V5 crash when using the DMU Sectioning tool, and how can it be resolved?

CATIA V5 may crash (or “abend”) when using the DMU sectioning tool due to compatibility issues between newer hardware/software drivers and older CATIA V5 releases. This issue is often linked to specific settings or corrupted user configurations. Here’s how to diagnose and resolve the problem:

Common causes

  • Driver compatibility: Using updated graphics drivers with an older CATIA V5 release can cause instability.
  • Section fill option: The “section fill” feature in the DMU sectioning tool can overload the system, leading to crashes.
  • Corrupted CATSettings: Corrupted user configuration files (CATSettings) can interfere with proper tool functionality.

Solutions

  • Disable the section fill option:
    • Navigate to tools > options > mechanical design > assembly design > DMU sectioning.
    • Uncheck the “section fill” option. This reduces the processing load and prevents crashes during sectioning operations.
  • Clear CATSettings:
    • Delete or rename your existing CATSettings folder to reset configurations to default: Path: C:\Users\<YourUsername>\AppData\Roaming\DassaultSystemes\CATSettings.
    • Restart CATIA V5 to regenerate default settings.
  • Update graphics drivers:
    • Ensure you are using a Dassault Systèmes-certified driver for your graphics card. Certified drivers are tailored for stability with CATIA V5 and can be found on Dassault’s support website.
  • Check licensing requirements:
    • Ensure you have the appropriate license for DMU Space Analysis (e.g., SPA or DMN). Some features of DMU Sectioning may not work with basic licenses, leading to incomplete operations or crashes.
  • Reset parameter values:
    • Use the “reset parameter values to default” button in the DMU sectioning tab under tools > options > mechanical design > assembly design.
  • Additional tips
    • If working with large assemblies, reduce memory load by simplifying geometry or using visualization modes like CGR (CATIA graphical representation).
    • For persistent issues, consider upgrading to a newer CATIA V5 release that is compatible with your hardware and operating system.

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